rumpetroll wrote:
Why does bluetooth keep turning itself on now I've upgraded to iOS 11, it was fine with iOS 10 but it is now constantly turning itself on and I keep having to go back and switch it off.
This is extremely frustrating.
The answer is because Apple made a smart move in iOS11, where Wifi and Bluetooth are only toggled off from the network or device they were connected to, but not turned off completely. It's never really necessary to turn off either radio, EVER. The radios themselves use minimal at most battery power (we're talking Milliwatts which is insignificant). Wifi and Bluetooth improve the function of your phone, especially location services.
Instead of toggling them fully in Control Center, if you want to turn them off completely (again, there's really no reason to ever do so), go to Settings > Wifi and turn it off there. Or simply say, "hey Siri, turn Wifi off."
It's just a change in how things are managed. It's not a change that took anyone's ability to turn it off if they want to.